Post on 17-Mar-2020
Security and Surveillance Antennas
Satcom Meteosat Antennas
Unmanned Vehicle Antennas
Commercial PMR & Tetra St Pancras
Cobham Antenna Systems
The most important thing we build is trust
Specialist Antenna Design and Manufacture
DAS - Distributed Antenna System
Microwave Antennas
About the Distributed Antenna System
DAS - Antennas
DAS, a Distributed Antenna System, consists of a network of antennas
that are spaced separately and connected to a common source which is
able to provide wireless and radio coverage within buildings.
DAS can augment existing Cellular and WiFi networks.
The need for a system to support the changing face of mobile
communications has been prompted by increasing use of all types
of mobile devices - phones, laptops and tablets - with a major shift
from voice and low data rate communications. Users now expect
instant services including Internet access, emails, images, video and
downloadable apps.
Passive DAS
RF is distributed via coax cables to each antenna, from repeater or base
station.
Active DASFibre optic cabling backbone overcomes the transmission losses that
occur with a coax based system. Electric components convert and
amplify signals to RF for radiation by antenna.
Distributed radios
A system of small cellular radios - PICOcells and FEMTOcells create an
internal network that do not rely on the macro network.
Applications areas to benefit from DAS
4G, WiMAX, LTE.
Cellular
Public Safety
Government buildings
Hospitals, Healthcare
Corporate Offices, including High Rise In-Building
Convention Centres, Universities, Campuses
Transportation, Depots, Airports, Railway Stations
Stadia, Sports and Entertainment Arenas
Hotels and Hospitality
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The Distributed Antenna System
Cobham Antenna Systems, Microwave Antennas has developed many
antennas for airports and major public buildings around the world.
Sophisticated modelling techniques combined with 20 years of
experience in the design of microwave antennas will provide customers
with an efficient, reliable antenna that meets their exact requirements.
The company’s near-field spherical anechoic test chamber supplies
accurate patterns and 3D images to demonstrate compliance with
customers’ specifications.
DAS Antennas for Transport Hubs such as Airports and Railway Stations
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DAS - Antennas
PMR, Tetra, Security, Cellular
DAS - Antennas
PMR and Tetra Antennas - Open Area
• Lowfrequencywidebandomniantenna
• Verywidebandwidthsothatoneantenna
can accommodate several RF operations
• Nogroundplane
• Lowazimuthripple
An omni-directional antenna with an extended
performance (XPO2V-150-600/148), wide
bandcoverage-150to600MHz-and2dBi
gain across the band supplies PMR and Tetra
coverage within the airport complex.
XPO2V-150-600/148
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PMR and Tetra Antennas - Car Park
An omni antenna, OA1-0.42V/1316, was designed for communication
withinanairportcarparkcoveringTetra(385to400MHz)andPMR(450
to470MHz)frequenciesandsuitableforDAS,withinasingleantenna.
In this frequency range, omni antennas would normally be very large, but
due to severe height restrictions this antenna was developed whilst still
maintaining high specification beam patterns. It was coloured-blended
with its surroundings and the flying lead design enabled simplification of
installation.
SAR or Touch Safe specifications are incorporated in to the design,
together with bespoke mounting arrangements to ensure antennas meet
required beam pattern, network design and architectural approval.
OA1-0.42V/1316
PMR, Tetra, Security, Cellular
BDFPA-0.6-4.0-RL/1313 Ultra Wideband,
Bi-Directional Antenna
Ultra Wideband 0.6 to 4 GHz wall or ceiling mount
Bi-Directional Antenna for GSM and Wireless LAN
An ultra wideband bi-directional antenna was developed to cover
600MHzto4GHzinorderto‘future-proof’andallowforexpansionofa
systemwithouttheneedtochangeantennas(eg3.5GHzand700MHz
band).
This antenna has a dual-directional (peanut) beam shape and a single
flying lead for simple installation on to a flat wall or ceiling. It has been
designed to blend in with surroundings. Another prerequisite was that all
antennas were required to meet the SAR or Touch Safe legislation.
BDFPA-0.6-4.0-RL/1313
BDFPA-0.6-4.0RL/2020
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Above: this shows two 150-600MHz Omni Antennas (XPO2V-150-600/148) installed
high up in the Terminal Building providing Diversity for PMR/TETRA and lower down a
single Ultra Wideband (600-4000MHz) Bi-Directional antenna (BDFPA-06-40-RL/1313).
The full range of communication services is provided by these two types of antenna,
located throughout the airport complex.
DAS - Antennas
Ultra Wideband Directional Antenna
(150-2700MHz) for PMR, Tetra, GSM
and Wireless LAN
This low profile spiral antenna provides
directional pattern over 75° angles over the
band0.15to2.70GHz.Providingcircular
polarisation is gives optimum coverage when
mounted high up facing downwards in large
open areas. It is ground-plane independent.
Variations of this antenna have been supplied
foruseinmajorpublicbuildingsinNewYork.
Model FPA-0.15-2.7R/1874
Ultra Wideband Ceiling Mount Omni
Directional Antenna (380-6000MHz)
for Tetra, GSM and Wireless LAN
This ultra wideband omni antenna was designed
with a low profile enabling it to be ceiling
mounted.Itprovidespeakgaininthehorizontal
planeacrosstheband380-6000MHz,forusein
the widest possible range of locations covering
all bands, except the lowest frequency. With
performanceupto6GHzitwill“future-proof”
the installation saving the need to install
new antennas when requirements change.
It is available in different colours to suit the
environment.
Model OA-0.4-6.0V/2028
Omni Directional GSM Antenna (880-
2175MHz) for low ceiling mounting
This omni directional antenna is suitable for
covering all 2G and 3G GSM bands and may be
suitable in low ceiling spaces. Model XPO2V-
880-2175/1060covers820to2200MHzand
does not require ground plane.
Model XPO2V-880-2175/1060
Ultra Wideband (380-2700MHz)
Directional Antenna for Tetra, GSM
and WiFi
This low profile spiral antenna provides
directional pattern over 75° angles over
theband380-2700MHz.Providingcircular
polarisation, it gives optimum coverage when
mounted high up facing downwards in large
open areas. It is ground-plane independent.
OriginallysuppliedforuseinaNewYorkAirport.
Model FPA-0.4-2.0/2023.
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PMR, Tetra, Security, Cellular
Ultra Wideband Omni Antenna
Thisruggedantennahaslowazimuthripple.
It is suitable for multiple applications.
OA1-0.8-6.0V/2021
Ultra Wideband Directional Antenna
Circular Polarised directional antenna provides
0to6dBigainacross600MHzto6GHz.See
datasheet.
FPA-0.6-6.0R/2022
Model Frequency Gain Beamwidth Polarisation Size Connector
GHz dBi Az° El° mm inches
DIRECTIONAL
FPA-0.15-5.0R/1874 0.14 - 2.70 -2 to +7 45 90 Right Circular 110x980 Ø 3x39 N(F)
FPA-0.4-2.7R/2023 0.40 - 2.70 2 to +7 65 65 Right Circular 77x502 Ø 3x20 N(F)
BDFPA-0.6-4.0RL/1313 0.60 - 4.00 4.5 75 75 Dual Circular 280x227x50 11x9x2 N(F) 1m cable
BDFPA-0.6-4.0RL/2020 0.60 - 4.00 4.5 75 75 Dual Circular 280x227x94 11x9x4 N(F) 1m cable
FPA-0.6-6.0R/2022 0.60 - 6.00 2 to +8 72-79 69-88 Right Circular 100x230 Ø 4x9 N(F)
LPA6-TRI-FL-D4/957 0.88 - 0.96
1.71 - 1.88
1.92 - 2.175 6 80 80 Vertical 339x225x25 13x9x1 SMA(F) 2m LSZHJ cable x3
LPA7-18V-502/451 1.71 - 1.88 7 60 80 Vertical 22x132 Ø 1x5 SMA(F)
FPA7-2.0DS/1825 1.92 - 2.175 6 65 65 Dual ±45°∞ 99x99x15 4x4x0.6 QMA x2
DLPA7-2.5-5.5DS/1315 2.40 - 2.50
5.15 - 5.85 7 60 60 Dual ±45°∞ 37x132 Ø 1.5x5 SMA(F) x4
DLPA6-2.5-5.5DS/1314 2.40 - 2.50
5.15 - 5.85 8 60 60 Dual ±45°∞ 55x161 Ø 2x6 N(M) 0.5m cable x4
OMNI
XPO2V-150-600/148 0.15 - 0.60 2 360 80 Vertical 806x156 Ø 32x6 N(F)
OA1-0.42V/1316 0.38 - 0.47 1 360 85 Vertical 239x395 Ø 9x16 N(F) 1m cable
OA-0.4-6.0V/2028 0.38 - 6.00 -1 to +5 360 70 Vertical 182x352 Ø 7x14 N(F)
EVD2-915/1284 0.87 - 0.96 2 360 80 Vertical 262x26 Ø 10x1 N(M)
OA1-0.8-6.0V/2021 0.80 - 6.00 2 360 75 Vertical 143x108 Ø 6x4 N(F)
XPO2V-880-2175/1060 0.88 - 2.175 2.5 360 50 Vertical 221x50 Ø 9x2 N(F)
DSO3-24-54/1177 2.40 - 2.50
5.15 - 5.725 0 n/a n/a Dual ±45°∞ 93x100 Ø 4x4 SMA(F) x4
Antennas for Wireless LAN/WiFi hotspots
Omni directional diversity antenna (DSO3-24-
54/1177) has dual frequency bands each with
dual polarisation.
DSO3-24-54/1177
This slim, low profile directional antenna
(DLPA7-2.5-5.5DS/1315) can be flush mounted,
has 7dBi gain and has dual frequency bands
each with dual polarisation.
DLPA7-2.5-5.5DS/1315
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This directional antenna (DLPA6-2.5-5.5DS/1314)
has flying leads for increased flexibility, enabling
the system radio to be installed at a greater
distance. Gain is 8dBi with dual frequency bands
each with dual polarisation.
DLPA6-2.5-5.5DS/1314
Although the majority of general areas within
the airport terminal which require WiFi are
coveredbymultiplexingthe2.4and5.5GHz
WiFi bands into the GSM wideband antennas
(whichcoverupto6GHz),therearehotspot
(dense RF) regions which require higher density
coverage for fast Internet access. For these
points a range of dedicated dual frequency WiFi
diversity antennas was developed.
These neat and discreet base station antennas
were developed with each antenna operating
across both frequency bands in one housing in
order to keep the quantity of antennas required
to a minimum. All antennas have dual slant
±45° polarisation for total versatility and are
optimised to maximise system performance.
There are three antennas for this application,
all of which have been supplied and are used in
UK Airports.
The following antennas are now available through the online iBwave catalogue and vex files are available on request.
Chelton Limited trading as Cobham Antenna SystemsCobham Antenna Systems - DAS Antennas, 2013-02
©Chelton Limited
Chelton Limited has a policy of continuous development and stress that the information
provided is a guide only and does not constitute an offer or contract or part thereof.
Whilst every effort is made to ensure the accuracy of the information contained in this
brochure, no responsibility can be accepted for any errors or omissions.
All photography is protected by copyright and is used with thanks to the respective owners.
www.cobham.com/antennasystems/microwaveantennas
Cobham Antenna Systems
M: Cobham Antenna Systems, Lambda HouseCheveley, Newmarket, Suffolk CB8 9RG, UK
T: +44 (0)1638 732177F: +44 (0)1638 731999 E: newmarket.sales@cobham.com
Spherical Near-Field Testing
The on-site spherical near-field test facility is
an example of our commitment to enhancing
development facilities and technical support
service to customers.
This facility provides 3-D radiation pattern
data to verify specifications and to ensure
compliance with stringent radiation pattern
envelopes where necessary. The far field
radiation pattern of the antenna can be
calculated in any direction, in any polarisation,
circular or linear, at any angle.
Operatingwithin0.4GHzto40GHz,ithasfull
dynamicrangeperformancedownto0.8GHz,
and sufficient sensitivity to test antennas in the
lower frequency range.
unwanted radiation off the feed circuit, which
can be corrected at a very early stage, and the
affects of coupling within a circuit that may
otherwise cause amplitude or phase corruption
within an array.
Testingtimesdependonantennasizein
wavelengths and the number of measurement
frequencies. Gain and directivity measurements
can be provided as well as phase. This allows
for phase and amplitude matching batches of
antennas which is necessary for Spiral antennas
used in Direction-Finding systems.
An additional benefit of the spherical near
field test facility is the ability to perform back
projections on to a given plane within the
measurement sphere which helps identify
potential material defects. It also helps in
the design process to determine if there is
WiMAX and LTE Unmanned SystemsLink16
BROCHURES
2012 Catalogue
C-Band Radar Systems
Ground ControlAntenna TestingTotal Capability Electronic Warfare Body Worn
MIMO and Multi-Beam Antenna Technology